30 БАЛЛОВ!!очень надо , пожалуйста
Task 4. Choose the correct answer.

1 She ......... the door when she heard the phone ring.

A had just locked В is locking C locks

2. They ……….for hours when they stopped to have lunch.

A were working В had been working C worked

3. I …….. for two hours by 12 o’clock.

A will have been reading В will have read C am reading

4. He ………..the letter as soon as it arrived.

A had opened В opened C had been opening

5. Sarah…………. dinner when she burnt her finger.

A was cooking В cooks C is cooking

6. Philip ………..his dinner by the time we get home.

A had been having В will have had C will have

7. The people ………. for an hour before the rescuers came.

A had been waiting В waited C are waiting

8. Emily…………. her lunch already, even though it’s only 10 o’clock.

A has eaten В was eating C ate

9. Tom ……….his homework ever since he got home from school.

A has been doing В is doing C does

10. My parents ……… to bed by the time I got home.

A are going В had been going C had gone